Who said "I've learned that trust is the hardest thing to give."?

This quote is attributed to Black Widow.

I've learned that trust is the hardest thing to give. - Black Widow

"I've learned that trust is the hardest thing to give."

Black Widow Relationships

"I'm not the only monster in the room."

"It's never too late to start over."

"We all have our secrets. The question is what we do with them."

"Family is complicated, but it's all we have."

"The key to a happy marriage is communication."

"Marriage is about compromise and understanding."

"Life's greatest treasures are relationships."

"Trust is a luxury I can't afford."